A lot of times when mentoring a newbie, they'll just forget to rate you after they reach level 3. Why not have the game prompt for this the first time they dock at a station after getting level 3 in a license.

+1

It would be a big help to get reminded with a nice easy to use interface

Absolutely yes, this is an excellent suggestion. +1

+1

YES.
+ more than 1

+1000: duh

Any developmental time spent on the mentor system should be spent abolishing it.

+1 to OP

+2 to make mentor badge easier to achieve BUT expiring, lasting for 3 months max.